25231500396 has 18 divisors (see below), whose sum is σ = 63779626092. Its totient is φ = 8410500120.

The previous prime is 25231500389. The next prime is 25231500407. The reversal of 25231500396 is 69300513252.

25231500396 is a `hidden beast` number, since 252 + 3 + 15 + 0 + 0 + 396 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×25231500396² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 700875011 = 25231500396 / (2 + 5 + 2 + 3 + 1 + 5 + 0 + 0 + 3 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 25231500396.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 350437470 + ... + 350437541.

Almost surely, 2^25231500396 is an apocalyptic number.

It is an amenable number.

25231500396 is an abundant number, since it is smaller than the sum of its proper divisors (38548125696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25231500396 is a wasteful number, since it uses less digits than its factorization.

25231500396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700875021 (or 700875016 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 25231500396 in words is "twenty-five billion, two hundred thirty-one million, five hundred thousand, three hundred ninety-six".